To compare the treatment duration of intermaxillary elastics in correction of mild Angle's Class II division 1 malocclusion with clear aligner treatment (CA) versus fixed multibracket (FMB) in Adult patients. The study sample consisted of 24 consecutively patients (mean age ± SD 20.5+ 1.69 years), 16 females and 8 were treated in the Department of Orthodontics at the Faculty of Dentistry at Hama University. All patients were treated with a non-extraction orthodontic treatment, 12 with FMB and 12 with CA. treatment duration recorded by months in both groups. Two sample t-tests were used to test for significant differences between the two groups, the level of significance was set as P <0.05. The average treatment duration in the CA group was (6.58+1.12) months whereas the average was (12.50+1.80) in the FA group, with significant difference between the two groups (P<0.05). There was significant difference in the treatment duration with Class II elastics combined with CA and FMB.